Improvement in printing-pbesses



2 Sh ee'ts-Sheet 1.

E. ALLEN. PRINTING PRESS.

' No.- 73,943. I Patented Feb 4, 1868.-

2 Sheets-Sheet a BALLEN. PRIPITING PRESS.

No. 73,943. Patented Feb. 4, 1868.

gotten giant ifla'tmt 'ffi-rr.

EDWIN ALLEN, OF NORWICH, CONNECTICUT, A SSIGNOR TO THE ALLEN MANUFACTURING COMPANY.

- Letters Patent No. 73,943, dated February 4, 1868.

IMPROVEMENT IN rsmrmc-rnrssss.

To ALL WHOM, IT MAY cononnm Be it known that I, EDWIN ALLEN, of Norwich, New London county, and State of Connecticut, have invented snow and useful Improvement in Rotary Presses; and I do hereby declare the following'to be a full, clear, and

exact description thereof, which will enable any one skilled in the'art to make and use-the same, reference bciaz g' had to the accompanying drawing, forming part of this specification.

This invention relates to rot-a1 rcsses for rintin cuttin flstam in' or other ur oses, whose c linders l y P P s s l P s. P P y are geared together by irregular cog-wheels so as to insure correspondence in their rotation. -M resent invention consists in a method of ad'ustin the teeth of the drivin -'wheels in relation to each 7 y P .l g 5 other, so as to correct inaccurate fitting, and preserve steady and regular motion.

" In the drawings, A B-may represent two pr ss-cylinders; the convex surface of the upper, A, being ma to action the corresponding straight surfaces of the lower, B, by the rotation of the shafts C D, upon which I they arerespectively mounted in customary manner. E E F F represent two pairs of irregular cog-wheels.

keyed to the shafts C D, and situated respectively at the opposite ends of the cylinders. These cog-Wh els are constructed so as to operate upon, the principle described in.my application for Letters Potent of the United States, filed on the twenty-fourth day of August, A. D. 1867, and hence no special description of th'em'neod be given herein, except in so far as relates to the provision for their adjustment, in order to compensate for wear, and preserve accurate correspondence of movement. By applying these geur-wheels to both ends of the cylinders, asabove described, an equable and uniform motion is imparted to the shaft-s throughout their entire length, and their torsion or twisting is entirely prevented. The operating portion of the wheel F is made up of separate rocks, or cog ged sections F, which are made adjustable, in the direction of theirlength, by means of set-screws,

f, by which they are each held between the lugs f f," (see fig. 3.)

Now, it is manifest that any irregularity of motion, which may result from the ,wear of the cogs, or the inaccurate meshing thereof, may be rectified by setting or adjusting the sections so as to bring the cogsor teeth into the desired coincidence.

This device insures complete uniformity and regularity of motion, and prevents slippago or friction in the working-surfaces of the cylinders.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The rotary press, herein described, having one of its driving-wheels, F, provided with one or more adjustable segments Orracks F, substantially as and forthe purpose set forth.

To the above specification of my improvement in rotary presses, I have signed my hand, this 23d day of August, A. D. 1867.

EDWIN ALLEN.

Witnesses:

J. E. M. BOWEN, Ocnvms Kiuou'r. 

